having dated a paintballer (dated being the operative word) there is a crap load of reasons but I would have to say that reason numbers 1 and two would be:
#1 chronic lying : "I was the last man standing, I could hear the thunder in the clouds as the paintball Gods suddenly bequeathed me with the all mighty power of speed and agility and I set forth and caned 3 men on the opposing all the while posing for the cameras"
"Honey I swear your the only one for me"
#2 Overcompensation combined with no hang time: Huge Barrel on the gun, small barrel in the dye pants culminated by the 7 not so wonderful minutes of play!